你知道什麼是 self attention 機制嗎？ 自注意力機制 (Self-attention mechanism) 是注意力機制的變體，其減少了對外部信息的依賴，更擅長捕捉數據或特徵的內部相關性。 我能參考什麼論文來獲得更詳細的資訊？
關於self-attention更詳細的介紹，可以參考以下論文：

1. "Attention is All You Need" by Vaswani et al. 

2."Hierarchical Self-Attention for Image Captioning" by Lu et al.

3."Self-Attention Generative Adversarial Networks" by Zhang et al. 

4."Self-Attention Message-Passing Neural Networks" by Wang et al.

5. "A Pure Self-Attention Vision Model" by Chen et al.
https://en.wikipedia.org/wiki/Attention_(machine_learning)
https://zh.wikipedia.org/wiki/%E6%B3%A8%E6%84%8F%E5%8A%9B%E6%9C%BA%E5%88%B6